<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<style>
  ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

li {
  margin-block: 6px;
}

a {
  display: flex;
  align-items: center;
  color: #6247AA;
  text-transform: uppercase;
  font-weight: 600;
  text-decoration: none;
}

a::before {
  content: "";
  display: block;
  width: 10px;
  height: 10px;
  margin-inline-end: 10px;
  border: 1px solid #6247AA;
  border-radius: 50%;
}

a:hover, a:focus {
  color: #A06CD5;
}

a:hover::before, a:focus::before {
  background: #A06CD5;
  border-color: #A06CD5;
}

/* General styles */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  padding: 24px 16px;
  font-family: "Figtree", sans-serif;
  font-size: 1.2rem;
  line-height: 1.6rem;
  background-image: linear-gradient(30deg, #C9C9C9, #A3A3A3);
  min-height: 100vh;
}

.list-demo {
  background: #FFF;
  padding: 40px;
  border-radius: 20px;
}

@media screen and (min-width: 500px) {
  body {
    padding: 48px 24px;
  }
  .list-demo {
    padding: 80px;  
  }
}
</style>
<body>
  <section class="list-demo">
    <ul>
      <li><a href="https://en.wikipedia.org/wiki/Tim_Berners-Lee" target="_blank">Tim Berners-Lee</a></li>
      <li><a href="https://en.wikipedia.org/wiki/Robert_Cailliau" target="_blank">Robert Cailliau</a></li>
      <li><a href="https://en.wikipedia.org/wiki/Vint_Cerf" target="_blank">Vint Cerf</a></li>
      <li><a href="https://en.wikipedia.org/wiki/Bob_Kahn" target="_blank">Bob Kahn</a></li>
    </ul>
  </section>
</body>
</html>